基于分形理论的无棣县城镇体系研究

In the research about spatial structure of urban system, Most of them are based on province or large areas in our country, only a few is based on the county level. However, The theory research in the county level, to be said about spatial structure of urban, it has significant meaning to improve the research level of urban system in our country and to promote the development and perfection of our country’s urban system. This passage takes Wu-Di county for example, using the fractal theory, under the premise that researching and understanding the general situation of urban system in Wu-Di county, using the three fractal dimensions which are Aggregation dimension, Correlation dimension and Gridding dimension, to deeply research the spatial structure of Wu-Di county. The results show that the feature of aggregation is relatively obvious, the degree of spatial association is ordinary, comparing to ideal state, the accessibility of the towns has larger gap and the balance of spatial distribution is moderate. On this basis, rational suggestions for optimization of spatial structure of this county’ urban system are proposed.